From Bearing Arms:

A wide majority of Swiss voters cast ballots Sunday in favor of enacting stricter gun control rules better aligned with European Union regulations, according to Reuters.
The binding referendum passed by a margin of 64 to 36 percent, according to the news service. While Switzerland is not part of the EU, it is part of Europe’s Schengen open-border system, meaning bucking Brussels on gun regulations could have led to the nation leaving the Schengen zone.